preinst is in mini-dinstall 0.6.29ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | #!/bin/sh
set -e
OLDDIR='/usr/lib/site-python/minidinstall'
if [ "$1" = upgrade ]; then
if [ -d "$OLDDIR" ]; then
printf "Removing old optimized Python files in %s\n" "$OLDDIR"
for i in pyc pyo; do
rm -f "$OLDDIR"/*.$i
done
fi
fi
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